CVE-2018-7186

NameCVE-2018-7186
DescriptionLeptonica before 1.75.3 does not limit the number of characters in a %s format argument to fscanf or sscanf, which allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a long string, as demonstrated by the gplotRead and ptaReadStream functions.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1302-1
NVD severityhigh (attack range: remote)
Debian Bugs890548

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
leptonlib (PTS)jessie1.71-2.1vulnerable
stretch1.74.1-1vulnerable
buster, sid1.76.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
leptonlibsource(unstable)1.75.3-2low890548
leptonlibsourcewheezy1.69-3.1+deb7u2highDLA-1302-1

Notes

[stretch] - leptonlib <no-dsa> (Minor issue)
[jessie] - leptonlib <no-dsa> (Minor issue)
https://github.com/DanBloomberg/leptonica/commit/ee301cb2029db8a6289c5295daa42bba7715e99a

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